package lesson1;

public class Demo2 {
    public static void main(String[] args) {
        //String str = "";
        StringBuilder stringBuilder = new StringBuilder();
        for(int i = 1; i<=100; i++){
            //str += i+"";
            stringBuilder.append(i).append("");
        }
        String strb = stringBuilder.toString();
        System.out.println(stringBuilder.toString());

//        Integer num1 = 100;
//        Integer num2 = 200;
//        Integer num3 = num1+num2;
        Integer num1 = 128;
        Integer num2 = 128;
        System.out.println(num1 == num2);
    }
}
